Download 4G wireless video communications by Haohong Wang, Lisimachos Kondi, Ajay Luthra, Song Ci PDF

By Haohong Wang, Lisimachos Kondi, Ajay Luthra, Song Ci

A complete presentation of the video verbal exchange suggestions and structures, this ebook examines 4G instant platforms that are set to revolutionise ubiquitous multimedia communication.4G instant Video Communications covers the elemental concept and appears at structures descriptions with a spotlight on electronic video. It addresses the most important themes linked to multimedia communique on 4G networks, together with complex video coding criteria, mistakes resilience and blunder concealment innovations, in addition to complicated content-analysis and model options for video communications, cross-layer layout and optimization frameworks and techniques. It additionally presents a high-level evaluate of the electronic video compression common MPEG-4 AVC/H.264 that's anticipated to play a key position in 4G networks. fabric is gifted logically permitting readers to show on to particular attractions. the 1st half the ebook covers basic idea and platforms, whereas the second one part strikes onto complicated suggestions and functions. This e-book is a well timed mirrored image of the newest advances in video communications for 4G instant structures.

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Extra info for 4G wireless video communications

Sample text

The fundamental difference between wired and wireless technologies resides in the physical channel. The unique features of wireless propagation such as reflection, refraction, and shadowing result in various channel impairments including multi-path fading, path loss, and doppler frequency, making it very challenging for high-speed information delivery over the wireless channel. Furthermore, the time-varying nature of wireless media poses new design challenges for wireless networks, since the existing Internet protocols were developed based on the assumption that all packet losses are caused by network congestions, which is no longer the case in the wireless environment.

In PSS, an RTCP extension is standardized so as to support packet retransmissions for RTP applicable to unicast and multicast groups. 14 Introduction In [26], the protocol stacks and the end-to-end architecture of a video broadcast system over WIMAX are introduced. 4, the MBS (multicast/broadcast service) server at the controller side handles coding/transcoding, RTP packetization, mapping video channel ID to multicast connection ID (CID), shaping and multiplexing, encryption, FEC coding, constructing MBS-MAC-PDU for transmission over WiMAX PHY/MAC, burst scheduling and allocating OFDMA data region for each MBS-MAC-PDU.

Information Theory, IT-30, pp. 485–97, May 1984. 19. H. Gish and J. N. Pierce, Asymptotically efficient quantization, IEEE Trans. Information Theory, Vol. 14, pp. 676– 83, Sept. 1968. 20. C. C. S. Patent, 2,605,361. July 29, 1952. 21. 261, Video codec for audiovisual services at px64kbps, 1993. 22. 263, Video coding for low bitrate communication, 1998. 23. Y. Wang, S. Wenger, J. Wen, and A. K. Katsaggelos, Review of error resilient techniques for video communications, IEEE Signal Processing Magazine, Vol.

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